Control technology of broadleaf weed Chenopodium album in Vicia sativa breeding field
The research aimed to clarify the control technology of broad-leaved weed Chenopodium album suitable for Vicia sativa breeding field.In this study,field experiments were conducted to determine the control effects of plastic film mulching on broadleaf weeds and C.album in V.sativa breeding fields and screen herbicides that are safe to V.sativa and have high control effects on C.album.The results showed that the control efficacy of black film mulching on C.album was 81.52％,while that of white film mulching was 66.30％.After sowing,the herbicides were used in the soil sealing treatment before seedling and the control effect of pendimethalin 330 g/L EC,S-metolachlor·flumioxazin 33％SC and metribuzin 480 g/L SC was not significantly different.The control efficacy of flumetsulam 80％WG soil-sealed spray 75 g/hm2 mixed with 900 L/hm2 water at the 6th day after sowing on broad-leaf weeds was more than 90％,and that on C.album was more than 95％.The recommended dosage of prometryn 50％WP in seedling stage was 2 450 g/hm2,the control effect on broadleaf weeds was 87.85％-95.70％,and that on C.album was 90.00％-96.50％.Black film mulching cloud be used,flumetsulam 80％WG mixed with water at 900 L/hm2 could be sprayed on the sixth day after sowing,and prometryn 50％WP at the recommended dose of 2 450 g/hm2 could be sprayed at seedling stage,which was safe and had good control effect.
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